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Cardiac Dashboard Description

The goal of the cardiac dashboard is to give the general public a way to easily visualize nationally submitted cardiac arrest data. To achieve this there are two separate views available.

  1. State View: gives detailed information on all aspects of our cardiac arrest data including specific geography (only accessible by state data managers for their state’s specific data).
  2. Public View: gives a broad overview of our cardiac arrest data with the ability to observe larger trends (accessible to the general public).

Global Inclusion Criteria

The global inclusion criteria defines the minimum characteristics each event record must meet in order for it to be included in any of the calculations for the Cardiac Arrest Dashboards. For details on each element, its code, and range of values see the  NEMSIS Version 2.2.1 Data Dictionary.

National Element Label

National Element Code

Accepted Values

Type of Service Requested

E02_04

30, 911 Response Scene

Cardiac Arrest

E11_01

2240, Yes, Prior to EMS Arrival and

2245, Yes, After EMS Arrival

Service Times Visualization

In the top left section of the dashboard there is a visualization to show the distribution of three different service times for cardiac arrest related events.

The “Service Times” drop down menu can be used to select between Scene Response Time, Scene Time and Transport Time. The visualization then shows the number of records reporting each time (in minutes). Clicking on any bar will filter the rest of the dashboard to only look at records reporting that number of minutes. To leave this filter click on the bar a second time. Note that 0 minute time values have been excluded from the visualization of these distributions but NOT from the data set.

Scene Response Time Definition

Scene response time is defined as the elapsed time interval from “call received by PSAP” (E05_02) to an emergency to EMS “arrived on scene” (E05_06).

Scene Time Definition

Scene time is defined as the elapsed time interval from EMS “arrived on scene” (E05_06) to “unit left scene” (E05_09).

Transport Time Definition

Transport time is defined as the elapsed time interval from “unit left scene” (E05_09) to “patient arrived at destination” (E05_10).

Indication of Prior Aid Visualization

The top center visualization on the dashboard is a pie chart depicting whether or not prior aid was given with the count of events as well as the percentage of total. To filter the rest of the dashboard on prior aid indication, click on either of the pie slices. To leave the filter click on the pie slice a second time.

Prior Aid Definition

Prior aid is defined from the element E09_01. If any value other than the NOT values was recorded, prior aid was classified as “Yes”, otherwise as “No”.

Resuscitations Attempted Visualization

In the bottom left there is a visualization outlining the distribution of the results of resuscitations attempted. To filter the rest of the dashboard on resuscitation attempted click on the desired bar. To leave the filter click on the bar a second time. Note that multiple types of resuscitations can be recorded for a single record, e.g. a record could have “attempted defibrillation” and “initiated chest compressions” selected.

Scene Response Visualization

The bottom middle visualization shows a bubble map of type of scene response for cardiac arrest events. The coloring is defined as follows:

  • blue for "Lights and Sirens"
  • red for "No Lights or Sirens"
  • orange for "Initial No Lights and Sirens, Upgraded to Lights and Sirens"
  • green for "Initial Lights and Sirens, Downgraded to No Lights or Sirens"

The tooltips in this visualization are particularly useful for looking at the smaller bubbles. For each bubble the number of records and percent of total can be found in the tooltip. To filter the rest of the dashboard on scene response, click on the desired bubble. To leave the filter click on the bubble a second time.

Incident Disposition and Reason for Destination Visualization

The bottom right visualization shows a comparison between incident/patient disposition (E20_10) and reason for choosing destination (E20_16) using a segmented bar chart. The colors are defined as follows:

  • blue for “Unknown” (NOT values)

  • orange for “PT/Family Choice”

  • green for “Other”

  • red for “Guidelines” (includes On-Line Medical Direction and Protocol)

  • grey for  “Closest facility (none below)”
  • purple for “Diversion”

  • brown for “Decision by Other” (includes Insurance Status, Law Enforcement Choice, Patients Physicians Choice, Specialty Resource Center)

Information such as percent of total and count of record can be found in the tooltip. To filter the rest of the dashboard on incident/patient disposition and/or reason for choosing destination, click on the desired bar or drag to select multiple bars. To leave the filter click on the bar a second time.

Urbanicity and Timing of Arrest Visualization

The top right visualization in the dashboard looks at the intersection of two factor, the urbanicity of the incident location and whether the arrest occurred before or after EMS arrived. The colors are: orange for “Before EMS Arrival” and blue for “After EMS Arrival”. To filter the rest of the dashboard on urbanicity and/or timing, click on the desired bar or drag to select multiple bars. To leave the filter click on the bar a second time. Note that there is a “Cardiac Arrest” drop down menu above the visualization that can also filter on the timing of arrests.

Additional Drop Down Filters

In addition to the filtering options in the visualizations, there are a number of drop down filters provided:
  •  Age
  •  Gender
  •  CMS Service Level
  •  Etiology
  •  Cardiac Arrest

All of the provided filters are “multi-select”. If, for example, we would like to look at events for ONLY female patients, the fastest way to obtain that selection is to uncheck “(All)” and then check “Female”. This process is similar for other filters.

Tableau Toolbar

All Tableau dashboards share the same toolbar at the bottom of the view. Note that while most dashboards will have the same selections, some items may differ based on user permissions.

Undo, Redo, Revert, Refresh and Pause

These selections are found on the left side of the Tableau toolbar and can be used to help navigate the dashboard.

 

Undo will remove the last selection made, if you have used undo to remove a selection, you can then use redo to return to that selection. Revert returns the dashboard to its original view. Refresh will reload the data on the dashboard subject to any selections made. Pause will stop the dashboard from refreshing as you make selections.

As an example, if you want to make a set of complete selections in a dashboard’s filters, you could use these buttons to speed up the process. Normally every time a change is made, the dashboard will refresh. If you select “Pause” however, the dashboard will remain the same no matter how many selections you make. Once you have made all your selections, you can select “Refresh” to reload the dashboard based on those selections.

Subscribe, Custom Views, Edit, Share, and Download

These selections are found on the right side of the Tableau toolbar and can be used to interact with the dashboard in external ways.

 

The Subscribe button allows users to subscribe to a daily or weekly email that will show a static image of the dashboard as well as a link to the view.

You can select either a particular view (tab) or all the views (tabs) available in the dashboard. Under “Email Subscriptions” you can choose the frequency of emails and in “Subject Line” you can assign the subject for the emails. As a default, the subscription will be assigned to the email address associated with your NEMSIS account.

Custom Views allows users to save any particular set of filters or selections for quick access later. A user can create their view and then name it and save it either for their own personal use or use by anyone with access to this dashboard. Previously saved views will appear in the custom views tab.

Edit will open the dashboard in the web editor for Tableau. Note that this option is not available on all dashboards and will require some knowledge of how to use Tableau to build and edit dashboards.

Share will provide a couple of options for sharing the dashboard with others; specifically an embed code and a regular HTML link. While you can use the link to share the dashboard with others, please keep in mind that many of the NEMSIS dashboards will require a username and password so only those with credentials will be able to access them.

The last option is Download. Clicking on the download button opens up several options to download either the workbook, the data within it, or a static image of the view.

Selecting any one of these file types will produce a download of the requested file. Remember that not all options will be available for all dashboards and views.

Contact Info

Any questions, comments, concerns or suggestions with regard to this or other reports made available by the NEMSIS TAC, please contact us or leave a comment below!

Contact information is also available on our website.

Kevin White, BS
University of Utah School of Medicine
NEMSIS Technical Assistance Center
Phone: (801) 213-3408
Fax: (801) 581-8686
Email: kevin.white@hsc.utah.edu
Laurel Baeder, BA, MStat
University of Utah School of Medicine
NEMSIS Technical Assistance Center
Phone: (801) 587-7367
Fax: (801) 581-8686
Email: laurel.baeder@hsc.utah.edu




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